public class VibratorUtil {    
          
        /**  
         * long milliseconds ：震动的时长，单位是毫秒  
         * long[] pattern  ：自定义震动模式 。数组中数字的含义依次是[静止时长，震动时长，静止时长，震动时长。。。]时长的单位是毫秒  
         * boolean isRepeat ： 是否反复震动，如果是true，反复震动，如果是false，只震动一次  
         */    
         public static void Vibrate(final Context context) {   
             long milliseconds = 100;  
             Vibrator vib = (Vibrator) context.getSystemService(Service.VIBRATOR_SERVICE);     
             vib.vibrate(milliseconds);     
      }   
         public static void Vibrate(final Context context, long milliseconds) {     
                Vibrator vib = (Vibrator) context.getSystemService(Service.VIBRATOR_SERVICE);     
                vib.vibrate(milliseconds);     
         }     
         public static void Vibrate(final Context context, long[] pattern,boolean isRepeat) {     
                Vibrator vib = (Vibrator) context.getSystemService(Service.VIBRATOR_SERVICE);     
                vib.vibrate(pattern, isRepeat ? 1 : -1);//-1为反复震动     
         }     
        
    }